What an awkward way to go.

Male bedbugs will schtup anything, and when they do, their stabby little penises can do great damage to one another. Female bedbugs have some “down there” armor that absorbs the punishing blows of the bedbug’s love-spear, but males lack this protection. A pheromone discovered by a Swedish researcher can cause male bedbugs to kill each other with their penises through uncontrolled shagging: